The revision for this topic sentence is that B. Economic sanctions make it tricky for countries to build weapons.
It should be noted that a revision simply means the summary of a particular information. It's the writing of the main points.
In this case, the revision for this topic sentence is that that economic sanctions make it tricky for countries to build weapons.
The sentence that makes a good topic is that athlete Fauja Singh is an inspiration to older adults around the world and that athlete Fauja Singh is a brave and determined athlete.
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